PCZ Petro-Canada

Petro-Canada will host a conference call for analysts and investors on Thursday, July 30, 2009 at 7:00 a.m. Mountain time (9:00 a.m. Eastern time) to discuss second quarter results, which will be released on July 30, 2009. The media will be invited to ask questions following the analysts and investors. If you are unable to join us on July 30, a postview of the conference call will be available on our website.

Presenters:            Ron A. Brenneman, President and CEO; and
                       Harry Roberts, Executive Vice-President and CFO

Conference Call Host:  Ken Hall, Sr. Director, Investor Relations

Date:                  July 30, 2009

Time:                  7:00 a.m. Mountain time (9:00 a.m. Eastern time)

Telephone:             Analysts & Investors - 1-800-769-8320 (Toll-free
                       North America), 00-800-4222-8835 (Toll-free
                       International) or 416-695-6622

                       Media - 1-800-952-4972 (Toll-free North America);
                       or 416-695-7848

Audio Webcast:         http://www.petro-canada.ca/en/investors/845.aspx

Postview:              A postview of the audio webcast will be available
                       one hour after the conclusion of the conference call
                       and will be accessible by calling 1-800-408-3053
                      (North America) or 416-695-5800; pass code: 6821571#

Petro-Canada is one of Canada's largest oil and gas companies, operating in both the upstream and downstream sectors of the industry in Canada and internationally. The Company creates value by responsibly developing energy resources and providing world class petroleum products and services. Petro-Canada is proud to be a National Partner to the Vancouver 2010 Olympic and Paralympic Winter Games. Petro-Canada's common shares trade on the Toronto Stock Exchange (TSX) under the symbol PCA and on the New York Stock Exchange (NYSE) under the symbol PCZ.

Contacts: Media and general inquiries: Victoria Barrington, Corporate Communications Petro-Canada, Calgary (403) 296-8589 Email: corpcomm@petro-canada.ca Investor and analyst inquiries: Ken Hall, Investor Relations Petro-Canada, Calgary (403) 296-7859 Email: investor@petro-canada.ca Lisa McMahon, Investor Relations Petro-Canada, Calgary (403) 296-3764 Email: investor@petro-canada.ca Website: www.petro-canada.ca